Service design refers to the activities of planning and organizing the personnel, infrastructure, information communication, and material components of a service to enhance service quality and the interaction between service providers and customers. Service design can involve modifications to existing services or the creation of entirely new service approaches. In bustling metropolitan cities, where young and middle-aged populations receive the most attention as the main driving forces, elderly individuals who have migrated to the city often remain on the periphery, like invisible corners of the urban landscape, with little focus on their needs. Addressing the challenges and emotional difficulties faced by these marginalized elderly groups not only improves their happiness and quality of life but also offers a practical pathway to enhance the city’s overall image by benefiting its residents. This paper focuses on elderly individuals of the “third generation” who have moved to large cities, aiming to create improved experiences and value for them. By exploring their material and emotional needs, the study constructs a comprehensive service framework and designs touchpoints within the framework. The goal is to help the elderly integrate into their new environment, build new social circles, and adapt to urban life by enriching their social interactions through shared interests and hometown-based connections. The proposed service system addresses emotional support and information provision through three core software functions: 1. Chat Room: Facilitates social interaction by tagging users based on their geographic location and shared hometown, encouraging the elderly to establish new social networks in their new environments.2. Mutual Aid Board: Provides policy updates and assistance consultations to help the elderly overcome practical difficulties and adapt to urban life.3. Events Page: Showcases offline activities in their locality, expanding their participation and engagement opportunities. By combining online voice-based chats with offline activities, the platform uses hometown connections as a social bridge, enabling elderly migrants to quickly integrate into urban life, form new social ties, and establish a system of social empowerment. This approach offers valuable insights for addressing the needs of similarly marginalized urban groups.